The extraordinary career of the British Quaker polymath, Silvanus Phillips Thompson (1851–1916), encompassed fame in physics, electrical engineering, mathematics, history of science, educational method, painting, music, textbooks, X-rays, popular lectures, the promotion of women's rights, book-collecting, and not least his leadership in encouraging fellow Quakers to embrace the challenging results of research in the natural sciences. His public-facing career, with a reputation that ranged across Western Europe at least, centred on the sincere yet critical communication of new technical and historical (...) knowledge, in a mastery of four languages. Yet his kaleidoscopic work has not received any sustained historical examination since the Life and Letters produced by his widow Jane and daughter Helen in 1920. The centenary of his death was marked by an interdisciplinary workshop at the Westminster (Quaker) Meeting-House, “‘A Many-sided Crystal’: The Quaker Physicist and Electrical Engineer Silvanus Phillips Thompson” on September 16, 2016. This spotlight section of Centaurus captures four of the revised contributions to that event, and these cover Thompson's contributions to historical theory, biographical practice, and commercial technology, as just a few elements of the rich and complex legacy that emerged posthumously from his multifarious, polymathic talents. These collectively point us to a revised view of Thompson as a pre-First World War European figure who gained his authority not from specialization in a single area of esoteric research, but from a life of public service that integrated the literary arts and historical writing with sciences and engineering, all incorporated within an active Quaker practice. The papers in this collection thus show how Thompson came to be an historian of science with an unprecedented mastery of contemporaneous techno-scientific arts and sophisticated skills in historical-biographical writing, working harmoniously in a secular world with a rigorous yet non-dogmatic faith. (shrink)